Pop safety-valve.



PATENTED APR. 9, 1907.

' G. E. GOUTANT.

POP SAFETY VALVE.

APPLIOATIOR I'ILED JAILE, 1907.

[NV/3N TOR.

W 1 fix 5555 A TTOR/VE VS GEORGE E. COUTANT, OF SPRINGFIELD, ILLINOIS,ASSIGNOR OF ONE-HALF TO SAMUEL A. KING, OF PERU, INDIANA.

POP SAFETY-VALVE.

Specification of Letters Patent.

Batenteu April 9, 1907.

Application filed January 5,1907. Serial No. 350,978.

T0 at whom it may concern.-

Be it known that I, GEORGE E. COUTANT, a citizen of the United States,residing at Springfield, in the county of Sangamon and State ofIllinois, have invented a new and useful Pop Safety-Valve, of which thefollowing is a specification.

This invention relates to pop safetyvalves, such as used uponlocomotive-boilers and other pressure-retainers.

The object of the invention is to provide means whereby the valve willbe prevented from cocking or binding when lifted from its seat by thepressure of fluid, the escaping fluid being utilized for preventing thisob jectionable result.

A still further object is to provide adjustable means whereby theescaping fluid can be directed onto the valve, so as to practicallyequalize the pressure upon the inner and outer faces of the valve,thereby necessitating the use of a spring having merely sufficientelasticity to overcome the variations between the pressures on the innerand outer faces of the valve.

With these and other objects in view the invention consists of certainnovel features of construction and combinations of parts which will behereinafter more fully described, and pointed out in the claims.

In the accompanying drawing, which is a view partly in section andpartly in elevation, the preferred form of the invention has been shown.

Referring to the drawing by characters of reference, 1 is the base ofthe valve, the same being provided with a reduced internallyscrew-threaded portion 2, adapted to be se cured to the steam-boiler orother pressureretainer in. any preferred manner. Screwed upon the baseis a cylindrical casing 3, having an integral head at, on which isdetachably mounted a cap 5. Extending through the head and concealed bythe cap is a setscre'w 6, having a nipple 7 at its inner end for thepurpose hereinafter more fully set forth. A plurality of vents 8 areformed within the head at suitable points, and formed within said headat diametrically opposite points are interiorly-screw-threaded apertures9.

Extending into the casing and formed integral with the base is acylindrical tubular extension 10, the inner end of which constitutes aseat for a valve 12. This valve has an integral spider 13 of the usualform, which is movably mounted within the extension 11 and serves tohold the valve normally centered. The valve has a central recess 14 inits upper face surrounded by an inner annular compartment 15 and anouter annular compartment 16, both compartments being formed by grooveswithin the upper face of the valve 1.2. Telescopic casing-sections 17and 18 are interposed between the head 4 and the valve 12, and the upperone of these sections has a central recess 19, in which the nipple 7 isseated. from the other section 18 and is seated within the recess 14 invalve 12. The casing formed by the sections 17 and 18 incloses a spring21, the ends of which bear against the ends of said sections, so as tohold the valve 12 normally upon its seat.

A ring 22 surrounds and is slidably mounted on the extension 10 and hasoutstanding ears 2; engaged by the threaded ends 24 of bolts 25. Thesebolts have threaded portions 26 disposed within the apertures 9. Theheads 27 of the bolts extend above the casing 3, and nuts 28 arearranged upon these bolts adjacent their heads, so as to lock them inadjusted position. A cylindrical balfleplate 29 extends from ring 22 andhas one end inturned, as shown at 30, the edge of said inturned portionbeing disposed above and concentric with. the center of the outerannular compartment 16. I

It will of course be apparent that when the valve 12 is lifted from itsseat by fluid under pressure said fluid will escape between the valveand its seat and into the baffle-plate 29. The inturned end of thebafl'leplate serves to deflect the fluid into the outer compartment 16,and by adjusting the baffleplate into proper relation with the valvethis downward pressure of the fluid upon said valve will practicallyequalize the pressure upon the inner face of the valve, so that thetension of s ring 21 need only be suflicient to overcome tie variationsbetween the pressure upon the inner and outer faces of the valve. Bydistributing the pressure equally within the compartment 16 the valve isprevented from binding after it has been opened. The easing-sections 17and 18 shield the spring 21 from the escaping fluid. It is of courseunderstood that when the valve is lifted from its seat the lower section18 slides A nipple 20 extends into the upper section 17. The fluidreleased by the raising of the valve passes into the atmosphere throughthe vents 8. By removing the cap 5 and rotating the setscrew 6 thetension of the spring 21 may be regulated. By rotating the bolts 25 thebaflie-plate can be easily adjusted toward or from the valve to meetvarious conditions and without the necessity of detaching any of theparts of the device.

The preferred form of the invention has been set forth in the foregoingdescription; but I do not limit myself thereto, as I am aware thatmodifications may be made therein without departing from the spirit orsacrificing the advantages thereof, and I therefore reserve the right tomake such changes as fairly fall within the scope of the claims.

What is claimed ist 1. The combination with a casing having a valve-seattherein; of a spring-pressed valve normally disposed upon the seat, saidvalve having an annular compartment therein, and means adjustablymounted within the casing for directing escaping fluid into saidcompartment.

2. The combination with a casing having a valveseat therein; of aspring-pressed valve normally disposed upon the seat and having anannular compartment in its outer face, means slidably mounted within theeasing for directing escaping fluid into the annu lar compartment, andmeans for adjusting said slidable means.

3. The combination with a casing having a tubular extension thereinconstituting a valve-seat; of a spring-pressed valve normally disposedupon the seat and having an annular compartment in its outer face, and abaflie-plate slidably mounted on the extension for directing escapingfluid upon the valve and into the annular compartment.

4. The combination with a casing having a tubular extension thereinconstituting a valve-seat; of a spring-pressed valve normally disposedupon the seat and having an annular compartment in its outer face, abaffle-plate slidably mounted on the extension and overlapping the valveand its compartment, and means for adjusting said plate toward or fromthe valve.

5. The combination with a casing having a tubular extension thereinconstituting a valve-seat; of a spring-pressed valve normally disposedupon the seat and having an annular compartment in its outer face, abafIle-plate slidably mounted on the exten.

sion for directing escaping fluid into the annular compartment, andmeans carried by the casing for adjusting the baffle-plate upon theextension.

6. The combination with a casing having a tubular extension thereinconstituting a valve-seat; of a spring-pressed valve normally disposedupon the seat and having an annular compartment in the outer facethereof, means for regulating the pressure of the valve upon its seat,and adjustable means for directing escaping fluid upon the valve andinto the annular compartment to equalize the pressure beneath the valve.

7. The combination with a casing having a tubular extension thereinconstituting a valve-seat; of a valve normally disposed upon said seat,said valve having an annular compartment in its outer face, abaffle-plate adjustably mounted on the extension for directing escapingfluid into the annular com partment, and means for adjusting the baflieplate toward or from the valve. v

8. The combination with a casing and a tubular extension thereinconstituting a valve-seat; of a valve normally disposed upon said seatand having an annular compartment in its outer face, a baffle-plateslidably mounted on the extension and having an inturned deflectingportion overlapping the valve and compartment, and means for adjustingthe baffle-plate toward or from the valve.

9. The combination with a casing and a tubular extension thereinconstituting a valve-seat; of a valve normally disposed upon said seatand having an annular compartment in its outer face, a baffle-plateslidably mounted on the extension and having an inturned deflectingportion overlapping the valve and compartment, and rotatable adjustingdevices carried by the extension and engaging and adapted to actuate thebaffle-plate.

10. The combination with a casing having a valve-seat therein of a valvenormally disposed upon the seat and having an annular compartmenttherein, and means within the casingfor directing escaping fluid intosaid compartment.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

GEORGE E. COUTANT. Witnesses C. E. HEAD, F. l/V. BADENHAUSER.

ICO

